using System;

using Org.BouncyCastle.Asn1;
using Org.BouncyCastle.Math;

namespace Org.BouncyCastle.Crypto.Parameters
{
	public class DHPrivateKeyParameters
		: DHKeyParameters
	{
		private readonly BigInteger x;

		public DHPrivateKeyParameters(
			BigInteger		x,
			DHParameters	parameters)
			: base(true, parameters)
		{
			this.x = x;
		}

		public DHPrivateKeyParameters(
			BigInteger			x,
			DHParameters		parameters,
			DerObjectIdentifier	algorithmOid)
			: base(true, parameters, algorithmOid)
		{
			this.x = x;
		}

		public BigInteger X
		{
			get { return x; }
		}

		public override bool Equals(
			object obj)
		{
			if (obj == this)
				return true;

			DHPrivateKeyParameters other = obj as DHPrivateKeyParameters;

			if (other == null)
				return false;

			return Equals(other);
		}

		protected bool Equals(
			DHPrivateKeyParameters other)
		{
			return x.Equals(other.x) && base.Equals(other);
		}

		public override int GetHashCode()
		{
			return x.GetHashCode() ^ base.GetHashCode();
		}
	}
}
